Handgrip wrench with a lever and cam feed sliding jaw



@ct, M, @952 F. A. TENEROWPCZ ET AL 2,613,567

HANDGRIP WRENCH WITH A LEVER AND CAM FEED SLIDING JAW Filed Feb. 7, 1950INVENTORS BORTOLOT'H FQANK ATENEQowcz flmz'afewa ATTORNEYS Patented ca.14, 1952 OFFICE HANDGRIP WRENCH WITH A LEVER AN D CAM FEED SLIDING J AWFrank A. Tener'owicz and Louis Bortolotti, Lackawanna, N. Y.

Application February '7, 1950, Serial No. 142,848

. 1 This invention relates to a hand grip wrench, and more particularlyto a hand grip wrench having a leverand cam feed for the-Sliding jaw. Anobject of this invention is to provide a hand grip wrench, wherein thesliding jaw has a coarse adjustment for moving the latter to a selectposition relative to the fixed jaw, and has a hand actuable positivemeans for forcing the sliding jaw into engagement with an object heldbetween the two jaws after, adjustment.

Another object of this invention is to provide a hand grip wrench whichcan be applied to and removed from an object held between the fixed andsliding jaws without the necessity of readjusting the jaws.

A further object of this invention is to provide a hand grip wrenchwhichis simple in structure and cheap to manufacture.

.Other objects of the invention will become apparent upon consulting thespecification in conjunction with the drawings.

In the drawings: 7

Figure 1 is a side elevational view of the hand grip wrench of thepresent invention, with the lever and cam feed in its position forforcibly urging the sliding jaw against an object held between saidjaws;

Figure 2 is a fragmentary sectional view of the hand grip wrench takenalong the line 2-2 of Figure 1;

Figure 3 is a sectional view taken along the line 3-3 of Figure 1;

Figure 4 is a fragmentary sectional view, with parts omitted, takenalong the line 4-4! of Figure 2.

Referring now to the drawings, wherein like reference numerals have beenutilized throughout the several views. to designate like parts, there isshown the hand grip wrench, generally indicated by the numeral I8, saidwrench comprising a head II and a handle I2 dependently supportedtherefrom. The head is provided with a cutout I3 which extends inwarlyfrom one side face thereof and terminates at a point spaced from theother side face thereof. One of the opposed spaced surfaces of the slotI3 is provided with a plurality of gripping teeth extending therealong,

as indicated at M, to thereby provide a fixed griD- ping jaw I5.

Extending through the other one of theopposed surfaces of the slot I3and slidably supported in the head II is a'slidable jaw I6, said jawincluding a gripping head I! and an elon- 2 Claims. (Cl. 8187) 2 gatedthreaded shank I8. The gripping head I! has one face provided with aplurality of gripping teeth extending therealong, as indicated at I9,which are in opposed relation with respect to the gripping teeth I4 onthe fixed jaw I5. The other end face of the gripping member I1 isprovided with an inwardly extending groove '20 for embracingly receivingand supporting the adjacent end of the elongated, threaded shank I8. Itis to be noted that said other end face of the gripping member I! isdisposed in an upwardly inclined plane with respect to the first-namedend face thereof. The portions of the gripping head ll adjacent thegroove 29 are each provided with an elongated slot, as indicated at 2|,

the slots being in registry with each other. A pin '22 extends throughthe registering slots and the adjacent end of the elongated shank I8 tothereby slidably support the gripping head ll of the sliding jaw I6 formovement through a limited path longitudinally of the fixed jaw I5 andtransversely of the shank IS.

The head II is provided with a longitudinally extending slot 23 whichhas one end adjacent the other one of the opposed surfaces of the cutoutI3. Provided also in the head II is alongitudinally arranged well 24which has its open end in communication with the other end of the slot23 and slidably receives the other end of the shank Id. The shank I8 ispositioned longitudinally of the head II and extends through the otherone of the opposed surfaces and the slot 23 while being supported in thehead II for reciprocatory movement with respect to the fixed jaw I5.Disposed within the slot 23 and circumposed about the intermediateportion of the shank I8 is a hand actuable feed screw or feed nut 25which is in threaded engagement with the threaded portion of the shankI8, the latter being oppositely threaded. Circumposed about the shank I8intermediate the feed screw 25 and the one end of the slot 23 is aresilient member or coil spring 21' having on end bearing against theadjacent one end or bounding wall, as indicated at 28 and having theother end bearing against an annular flange 29, which is carried by theadjacent end face of the feed screw '2 5. The outer peripheral wall ofthe feed screw 25 is knurled, as indicated at 30, such that it may begrasped to impart a rotary movement thereto to move the sliding jaw I6toward and away from the fixed jaw I5. Circumposed about the threadedshank I8 intermediate the feed screw 25 and the and imparting a rotarymotion thereto.

gagement with the object 32.

possible.

socket-containing bounding wall of the slot 23 is a thrust washer 4i.

Positioned exteriorly of the feed screw 25 and operatively connectedthereto is a lever and cam feed, generally indicated by the numeral 3|,for positively urging the sliding jaw l6 into engagement with an object32 held between the fixed and sliding jaws. The lever and cam feedcomprises a lever 33 positioned in spaced, parallel relation withrespect to the handle 12 and having one end operatively connected to acam means, generally indicated by the numeral 34, the cam means beingsupported for rotation about an axis transverse of said handle and beingin abutting engagement with the adjacent end face of the thrust washer45. The lever 33 includes a handle 35 and a U-shaped yoke 36 having itsbight fixedly secured to the handle 35. The legs of the yoke 36 overlieopposite sides of the head H below the thrust washer 45. Fixedly securedto the inner faces of the legs of the yoke 36 is the cam means 34 whichincludes opposed cams 31, 38, said cams projecting beyond the free endsof the leg and being loosely seated in the complementary arcuate grooves38, 40 provided in the bounding walls of the socket 24. The cams 31 and38 underlie and abut the adjacent end face of the thrust washer 45 andurge the latter out of seating engagement with the socket providedbounding wall of the channelway 23, when the handle 35 of the lever 33is rotated, into spaced parallel relation with respect to the handle l2of the wrench .l 0, to thereby effect the movement of the sliding jawl6. The thrust washer 45 is provided with annular flange 41 forguidingly receiving the cam plates 31,. 38. The side walls of the handlel2 are provided with transversely extending, undercut portions, asindicated at 4!, such that the cam plates 37 and 38 may be removed fromthe complementary grooves 39, 40, and the lever and cam feed detachedfrom the handle '12 of the hand grip wrench Ill.

When the hand grip wrench I is to be utilized to grip the object 32between the fixed and sliding jaws l5, 16, respectively, the useradjusts the sliding jaw IE to a select position with respect to thefixed .jaw by grasping the feed screw After adjustment, the handle ofthe lever 33 is grasped-and rotated until the handle abuts the handle l2of the hand grip wrench I 0. As the lever 33 is being rotated, the cams3! and 38 apply a positive force to the thrust washer and the slidingjaw IE to force the latter into tight en- By means of the cooperationbetween the adjusting means and the gripping head [1, a unique finaladjustment is As the shank I8 is urged upward and contactis made withthe object 32, the gripping head slides upon the one end of the shank l8in an upwardly inclined plane to effect a final adjustment. While thehandle 35 of the lever 33 is held in its position of abutment with thehandle l2 of the hand grip wrench H], the user continues to impart apositive force to the object 32. When the user releases the handle 35 ofthe lever 33, the resilient member 21 urges the feed screw 25 and thrustwasher 45 into seating engagement with theadjacent bounding wall of theslot 23. Accordingly, the hand grip wrench H! may be removed from theobject 32 and reapplied to the same object at some later time withoutthe necessity of a readjustment.

Although only one embodiment of the invention has been described,numerous modifications can be made without departing from the spirit ofthe invention as set forth in the appended claims.

What we claim is:

1. In a hand wrench, a head including opposed spaced surfaces, one ofsaid surfaces being provided with a plurality of spaced gripping teethand forming a fixed jaw, there being a longitudinally extending slot insaid head having one end adjacent the other one of said surfaces, saidhead being also provided with a longitudinally arranged well having itsopen end in communication with the other end of said slot, an elongatedthreaded shank positioned longitudinally of said head and extendingthrough said other opposed surface and said slot and supported in saidhead for reciprocatory movement with respect to said fixed jaw, one endof said shank being located between said opposed surfaces and the otherend of said shank being slidably receivable within said well, a grippinghead connected to said one end of said shank for sliding movement in anupwardly inclined plane with respect to said fixed jaw, a feed nutarranged within said slot and circumposed about and in threadedengagement with said shank, a coil spring circumposed about said shankand having one end bearing against said one end of said slot and havingthe other end bearing against said feed nut, a thrust washer circumposedabout said shank between said feed nut and said other end of said slot,a U-shaped yoke arranged contiguous to said thrust washer and having itslegs receiving therebetween said shank and connected to said head forrocking movement about an axis transverse of said shank, and a cam onthe inner face of each of said legs and having a portion projectingbeyond the free end thereof, the projecting portions of said camsbearing against said thrust washer.

2. In a hand wrench, a head including opposed spaced surfaces, one ofsaid surfaces being provided with a plurality of spaced gripping teethand forming a fixed jaw, there being a longitudinally extending slot insaid head having one end adjacent the other one of said surfaces, saidhead being also provided with a longitudinally arranged well having itsopen end in communication with the other end of said slot, an elongatedthreaded shank positioned longitudinally of said head and extendingthrough said other opposed surface and said slot and supported in saidhead for reciprocatory movement with respect to said fixed jaw, one endof said shank being located between said opposed surfaces and the otherend of said shank being slidably receivable within said well, a grippinghead connected to said one end of said shank for sliding movement in anupwardly inclined plane with respect to said fixed jaw, a feed nutarranged within said slot and circumposed about and in threadedengagement with said shank, a coil spring circumposed about said shankand having one end bearing against said one end of said slot and havingthe other end bearing against said feed nut, a thrust washer circumposedabout said shank between said feed nut and said other end of said slot,a U-shaped yoke arranged contiguous to said thrust washer and having itslegs receiving therebetween said shank and connected to said head forrocking movement about an axis transverse of said shank, a cam on theinner face of each of said legs and having a portion projecting beyondthe free end thereof, the projecting portions of said cams bearingagainst said thrust washer, and there being opposed arcuate cam surfacesprovided in 5 the portions of said well adjacent said other end Numberof said slot for slidably supporting and guiding 706,753 the adjacentone of said cams. 1,155,948 FRANK A. TENEROWICZ. 1,196,900 LOUISBORTOLOTTI. 5 1,208,925 1,348,832 REFERENCES CITED 1,490903 Thefollowing references are of record in the 1,547,443 file of this patent:1,561,681 UNITED STATES PATENTS 10 2,102,237

Number Name Date 461,769 Patton Oct. 20, 1891 6 Name Date Holmes Aug.12, 1902 Millsap Oct. 5, 1915 Taylor Sept. 5, 1916 Desormeau Dec. 19,1916 Magnon Aug. 3, 1920 Anderson Apr. 22, 1924 Porter July 28, 1925Barnes -1 Nov. 17, 1925 Smethers Dec. 14, 1937

